Surfacing machine



I. P. ANDERSON. suRFAcmG MACHINE.

APPLICATION FILED MAR, 8, I92I' patented Mar. 14, 1922.

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J. P. ANDERSON. suRFAclNs MACHINE.

, APPLlcAnoN FILED NAN. a. 1921. 1,409,512. Patented Mar. 14, 1922. 4' 2 SHEETS-SHEET 2.

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JULIUS i. Ann'nasoii, or Das Moines, iowa, essieiiroa Osons-HALF v'ro HENRY 1 LaeEii-etris'r, or nas Moines,V IOWA. v

, SURFAOING MACINE.

To all ich-0m. t may concern:

Be it known that I, JULIUsP. ANDERSON, a citizen of the United States, and a resident of Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Surfacing Machine, of which the following is a speciiication.

This invention relates to Aimprovements in machines for surfacing floors and the like. Heretofore a large amount vof thesurfacing of newly laid floors has been done bythe hand scraper and sand paper blocks which are also operated by' hand. This is an eX- pensive opera-tion which requires considerable time and one in which it is somewhat difcult to obtain a floor with a smooth surf surfacing newly laid floors, and so arranged 1 may that a comparatively smooth surface be easily and quickly obtained.

A further object is to provide a mecha-ni-v cally operated device for surfacing floors having a motor or similar device for operating thel surfacing n'iechanism.`

A' further Objectis tojprovide al powerV driven mechanically Operated mechanismfor surfacing floors provided with means wherei by any one of a number of dierent kinds of cutting or finishing devices maybe easily and quickly attached to or removed from the mechanism.

A further object is to provide a power driven mechanically Operated iioor surfacing device employing a plurality of endless cutting or surfacing members designed to Operate in opposite directions so'as tO counteract their tractive effect or their tendency to advance the machine over the door surface.-v

A still further object is yto provide in 'a power driven floor surfacing mechanism adapted to receive any one of a series of dif' ferent kinds of surfacing devices,-means for changing the" relative speed between the mo` tor and the mechanism for operating the sur-A facing device.

A- rstill Yfurther object is to provide in av power driven mechanism employing 'a pluj rality of parallel and adjacent endless'cut ting or surfacing devices, improvedmeansv portion of the gear casing broken away' andfv the floor,

apparent Specification of Letters Piitent. i latngddr; 14;, 1922. Application filed March s, i921. serial No. 450,701. if

a `rangei'i'ient andcombination of the various v Y parts of the device,whereby the objects Vcontemplated are attainedfas hereinafter more fully set forth, pointedout in my; claims, and illustrated inthe *accompanyingdraw-k ings, in whichzf ff. Figurey 1 yis a side v"elevation of myeim@ proved floor surfacing machinefshowing: a'

also a portion of the front lside.v

Figure 2 isa transverse sectional'fview v taken on .the line 2 2; of vFigure 1.

Figure 3 is a plan vieWtaken onthe line 3--3 of Figure 2. c y f Figure L.1r-is a detailside elevation of the speed reducing and'changingmechanism for controlling thesurfacing devices. "l y Figurei isa detail side elevation 4of a fragmental portion of my improved 'machine showing a certain modification." andfalso` the manner in'which the continuous scraper is applied. Y

kFigure 6 is one of the detachable shoeslfor holding the' surfacing devices adjacent -to'f Figure 7 is anendelevation-Of one of the scrapersand the mechanism for'detachably mounting'tlie same.

Figure Sis a front elevation of Figure?? Figure "9 is aside elevation/of` my coinplete surfacing device. l! y Wy improved surfacing *machine com?. Vprises a supporting member l() whichV may be formed of wood ormetal, and having recesses 11 at itsforward end anda transversely arranged shaft 127On'the lower member ofV said recess.

This' member 10isl supported at'the centr'al portion of said'shaft 12 so that each of the endsof'v said shaft may bejdesigned fto receive a roller"13.` `Each end of said rollers is provided with recesses lfljin which ,are 'mounted Aroller bea-ring members having aK sleeve 15 designedk to firmly engage the 100 said shaft 12'. Sai'dsleeve provided with a suitablev ball'race designed torcarry balls 16 which'are designed `to 'runV in asleeve 17,

Vthe said? sleevev 17 beingmOunted-'in each end-ofthe rollers 13, asl clearly shown "For securing fthefrolle'rs yto thev shaft, I` have provided awasher 18 designed to'enter the recesses 14:, said washer being held in* y'position-by means of a nut 19; The washer" 18 is of a diameter substantiallyV equal to 6h@V diameter of the. ,IKQCQSSGS 1.4 and iS de-L signed to have its inner face engage patching members 20 which are mounted in'annular grooves in the bottom of the recesses 14. This packing member may be formed Vof felt or any other suitable material, and is for the purpose of preventing dust or dirt from entering tlie bearing members. Y

The innei' one of each of the recesses 14 is provided with a beveled gear 21 which is designed to rest against the ends of the bearing members and also designed to engage the packings 20and fixed to therollers :by means of pins 22.

These beveled gears 21 are set in the recesses 14 in such a manner that they enter into the Yrollers 13 and the upperedge substantially against the member 10. This permits the inner endsof the rollers 13 to operate as near together as possible yfor reasons hereinafter to be made clear.

The forward end of the member 10 is pro- .vided with va half boxing 23 mounted above the recesses 11, which is designed to carry a semi-boxing member 24. These boxings are held in position relative to each other and to the member 10 by means of bolts 25. The

. said boxing vis designed to carry a vertical `,shaft 26 having its lower end provided with a beveled gear 27 which is designed to mesh with the upper edges ofthe beveled gears 2l in such amanner that the said beveled gears are operated in Vopposite directions,

' f V26 is rotated. The edges of the-beveled gear 27 enter the recesses14, as clearlyshown in Figure 2. The boxing kmembers 23 and 24 are designed to receive a thrust bearing 28 and a ball bearing 29 which are shown in section in Figure 2. l

. Secured to the top edge olf the member 10, I have provided a cover plate 29a whichcxH tends the entire length of the said member 10, an-d is provided with downwardly extending side portions 30. The forward end of the plate 29a is provided with a casing 31 upon which is mounted a motor 32 of the VVvertical type, having an extended shaft 33, Ythe lower end oi which is" provided with 'squared 1portions 34Which extend downward through the .top ofthe casing 31 .at a AVposition .behind the upper end of the shaft 26.

A sleeve is slidably mounted on the Vportieri 34whicli is designed to carry pinions @36 and 37.Agroove 38 is formed between the .pinions`36 .and 37 which is designed for in V Figure 4. Thelfork 40 is provided withV vthrough a slot 43 in one side of the casingV r V :lie purposeof lreceiving inwardly extending Y; e0,

ends v3,9 .Of fork'40 which is pivotally secured to an upright 41, as clearly shown a handle 42 which is designed to extend 'The Said .Slet is provided with adjant pivoted pawl 44 which is provided with notches in its edge and is for the purpose of holding the lever 42 in either of its positions of movement.

By this arrangement the sleeve may be elevated or lowered on the shaft 34 as desired. The shaft 26 is provided with a gear 45 designed to engage the gear 36 when the sleeve 35 is in its lower position of movement. rl"he said shaft 26 is also provided with a gear 46 designed to engage the gear 37 when the sleeve 35 is in its upper position of movement. rThe gear 46 is ofv a greater diameter than the gear and the gear' 36 is .of `a greater diameter than the gear 37, so that when the gear is in mesh with the gear 45, the shaft 26 will be rotated at a higher switch which also serves to throw the mechlanism into and out of operation.

The back portion ofthe member 10ris provided with a slot 47 and also a slidably mounted yoke 48 which is designed to operate in grooves 49. :This yoke 48 is provided with set screws 50', the inner end of which is designed to rengage the end of the member 10 so the said :yoke may be adjusted VVfor vthe vpurpose of tightening the belts or surfacers, as will hereinafterrbe made clear.

Each of themembers of the yoke 48 is provided witha hub 51, into which a shaft 52 is mounted, which also extends through the slot 47. The hub 51 is designed to receive a sleeve'53 similar to the sleeve 15, the sleeve 53 being designed to carry a corresponding ball bearing 54. Ball bearings similar to those on the shaft 12 are provided for'the vouter end of the shaft 5,2. Each set of the said ball bearingsis designed toncarry a roller 55 similar to the rollers 13, and is of the same diameter,l the vonly difference being the rollers 55 arenot provided with the inner recesses 14. e

Secured in the bottom edge of the member p10, l have provided a series rof transversely arranged shafts. 5 6,` each of which is provided With a washer 57 anda nut' 58 similar to -tlioseon the 'shaft 12. e Each of the shafts 56 is designed to receive a; roller 59 which is of considerably smaller diameter than the rollers 13 or 55, but are arranged so that faces of the endrollers.

These rollers are designed to receive belts 6() which are continuous and may have their outer surface-s `.provided with an abrasive substance such as Asand paper, Y

their lower faces lare in line with the lower .125

`masia By the construction disclosed, it will be seenthat abelt may be placed on each set of rollers which will be drivenv in opposite directions as the motor is operated.

For protecting the bearings of therollers against dirt to -a ,certain extent, I have provided a downwardly hanging side plate 61 for each of the members which is mounted by meansof hinges 62 so that the belts may be placedin position or moved at the will of the operator kby merely raising the side members 61 and placing the belt over the rollers edgeways. I have also provided downwardly extending portions 63 for the forwardiend of the plate 29.' Secured tothe back end of the top of the plate 29, I have provided a handle 64 which is for the purpose of assisting in operating the device.

Projecting laterally fromvtheusidey of the members 30, I have provided pins 66 lupon which is pivotedly mounted a yoke 67 secured to the lowerend of 'a handle 68.. ,This yoke 67 is formed of spring material in such aj manner that its members maybe separated to permit them'to be free from the pins 66 Y when it is desired to remove the said handle.

I n order to obtainth'e proper tension of .j

the belts and take up any slack which may be produced byone ofthe beltsstretching a little more than the other, I have provided a pin 69 `extending laterally from each side ofthe member 10, eachfof said pins. being provided with a bell crank arm 7 O having its upper end provided with a shaft 71, each end ofwhich is provided with a roller 72, as clearly` shown in Figures' and 5. lIhe lower end'of the bellfcrankO is provided ,withV a .spring '73 which has oneend mounted in a pin 74. The belts 60 inay have their outer faces provided with Vany desired grade'of an abrasivev or they may bezprovided with a bulfed surface forpolishllg.

y The practical operation ofrmy device is substantially as follows:

When it is desired to polishaj waxed floor,

I loosen they set screw Oandmove the yoke 48 inward in `its grooves 49, thereby permitting the rollers 55 to` be moved closer to thel rollers 13 after whichI grasp a suitable polishing belt which may be formed `of any suitable polishing material, and elevate one of the .doors 61 a-nd'placethe said belt over the rollers 13 and 55, having `thelower run of the belt `under the rollers 5K9.l 'The op'po- 'i site belt is placed'inv thesame manner, .after which the set screw. 50 is operated and the yoke 48 movedoutw`ard,eausing the rollers 55'to engage the beltsand the saidvbelts tightened4 any desired arrm'unt.` -k The surfacing machine is then placedon the floor to bepolished withl the lower run of y thevbelt resting on thetloor. vI' then move i the lever 42 so that the gear 36 lis in'mesh with the gear 45, `'after which themotor is slight tendency totwistv or rotate about aV vertical axis, `but its longitudinal movement in either direction is neutralized by the fact` that the belts varerun in `opposite directions. The twisting movement, however, is easily In this connection, this sthe reason why have mounted the beveled geai's'21 lin the recesses `14 inthe manner that I have, so that the inner edges of the belts may runas taken care ofby means of the handle 6% close to each other as possible and thereby eliminate as near as possible the twisting tendency which would increase as the belts are separated fromeachother.' i

If Vit is'desired to sandpaper a floor, I

t-he yoke 48` after which the belts are free to be removed1 and placeon the said rollers a sanding bel. Y 'l y .Y

i When it is desired to scrape a floor, .which new floor, I have provideda belt' 7 5 similar to the one shown in Figure 5,' provided with ai series of transverse, plates 7 6 which [are connected tothe outer surface of they belt-sgat their forward edges by means off-T? rivets 7'7. 'AEach'of .theseplates'76 is'pro` vided with fa laterally extending portion 78 havinga groove- 79. ;This groove 79,is deblades 80 are givenl the proper angle for the most ethcient work, which' is ysubstantially y'as shown .in Figure 5g the said belt'being designelto rotate in a clockwise direction'.

Vheii the 'belt 75 has been.l placed in Vposi-A A f tion,I u sually remove the rollers -59 and substitute them with lablock or' the shoe 82, which is provided with holes 8.3- to receive lreniove the polishing beltsby first.` loosening Vis usually the -iirst operation in finishing av "signed" tio receive a scraperr blade 80 securedl Vin position byv means of boltsv 81. The' the shaft 56,`the said holes being providedV with enlarged po-rtions84 for the purpose of receiving the niitsljv .This shoe Vis of such widththat its under face will be in` line wit-hthe underfaces of the rollers 113 and4 55. ofthe shoes i's'providedwith acon-A 'adi acent rollers.

tion, the motor may becperated `"and, the

'lever42 maybe shifted to its reverse position' of movement, which jwillcau'sevthef ear 37 to engage the gear 46 "and the-fspee' of the lrollers 13 to Ybe -i'ieduced'as' it isniot deizo sirable to operate .i the scraperv at as high v speed` asthe polishing'beltsfor the reason t .that the" 'scrapers require considerable more? pow-enferl their operation.

It will be 'observ'Y d thatjas'the scraper engages the floor surface, it will have atendencytoy move backward whichi'is r taken care of by means of the rplate 76 engaging the belt 75. This is one reason for substituting the shoe 82 for the rollers, as the Vlower surface of the shoe presents an even and continuous surface under which the plate 76 may operate freely so the said blades may loperate without vibration as they are moved over the surface of the Hoor. v

By this arrangement, it will be seen that as the scrapei's are operated, the high places of the floor will be engaged by the Scrapers first, which will producefan even surface to a floor which can not be produced by a single hand operated scraper. The shoes 82 may also be used with the sand or polishing member having at each end a set of laterally extending. shafts, a roller for each of said shafts, a surfacing belt for each corresponding set of Shafts, the lower runs of said belts being designed to engage a floor surface, means mounted on said support for driving said belts in opposite directions, said support being so arranged that the entire weight thereof and the driving means are carried by the lower runs of said belts. 1 2. In a floor surfacing device, a comparatively thin supporting member, each end of which is provided with a set of laterally extending and aligned shafts, each of. said shafts being provided with a roller, a surfacing belt for each set of corresponding rollers, said belts being designed to have then-.lower runs engage the floor surface,

`means for adjustably lmounting the shafts at one end of said supports-to tighten and loosen said belts, and means actuating said adjusting means, means for driving said belts in opposite directions. the entire weight of said support and said driving means ibeing designed to vbe carried by the lower runs of said belts. y

3. In a floor surfacing device, a supportying member having at each `end Va setl ofv laterally extendingv and alined i shafts, a

.roller for each of said shafts, asurfacing belt for .each corresponding set of shafts, the lower runs of `said belts being designed to engagethe floor'surface, means mounted on said support for .driving said belts in opposite directions, said support being so arranged that the entire weight thereof and the driving means are carried by the lower runs of said belts, and of a length sillo-v leegte stantially equal to the length of said belts andof a width substantially equal tothe combined width of both of said belts.

4. In a floor surfacing device, a supporting member having at eachend a set of laterally extending and alined shafts, a

roller for each of said shafts, a surfacing belt for each corresponding set of shafts, the lowei-i'uiis of said belts being designed to engage a floor surface, said support in# cluding means for engaging the upper face of said lower i'uns to hold them in alinement with the under faces of said rollers, means mounted on said support for driving said belts in opposite directions, said support bethereof and the driving means are carried by the lower runs of said belts.v

,5. In a floor surfacing device,'a support, adjacent surfacing belts rotatively mounted in said support in a common plane adjacent and parallel to. each other, the lowerruns of said belts being designed to engage a floor surface, means Vmounted on s aid support forfdriving said belts in oppositedirections, said4 support being so arranged Athat the entire weight thereof and the driving means are carried said belts. j l

"6. Ina door surfacing device, a support,

by the lower runs vof *adjacent surfacing beltsrota'tively mountedv ing so arranged 'that lthe entire weightY ioo ing the vtension of said belts, and an inde- Y pendent and yielding ytension device for each of said belts.

7. In a ioor surfacing device,.a support,

a pair of adjacent'and alined rollers fixed to and rotatively mounted at one end Vof said support, a second pair of adjacent and alined rollers adjustably mounted at the opposite end of said support parallel with and 1 each of saidbelts, means foi-'driving said v belts simultaneously and in opposite directions, the weight of lsaid supporting means and the said driving means being. carried by iio ,120V `the lower runs of said belts, the length of v said supports being substantially equal to the length of saidbelts and of a width vsubstantially equal to the combined width of said belts.

8. In a floor surfacing device, a support# ing member having at each end a set of laterally extending and alined shafts, a roller for each ofvsaid shafts, a surfacing belt for each corresponding set of shafts, 'the lower runs of said belts .being designed to engage a floor surface, means mounted on said support for driving said belts in opposite directions, a motor on said support and means actuated by said motor for driving said belt driving means at variable speeds relative to the speed of said motor, said support being so arranged that the entire weight thereof and the driving mea-ns are carried by the lower runs of said belts.

9. ln a floor surfacing device, a support, a horizontal shaft fixed in said support having laterally extending ends, a roller rotatively mounted on each of said ends, each of said rollers having its inner end p'rovided with a recess, a beveled gear in each of said recesses fixed to thebottom thereof, a beveled gear communicating with both of said beveled gears, `a vertical shaft for the last said beveled gear rotatively mounted in said support, spaced gears fixed to said vertical shaft, said gears being of dierent diameters, a motor xed to said Support having an extended shaft parallel to said vertical shaft, a sleeve providedwith pinions of different diameters slidably mounted on said extended shaft, means for shifting said sleeve to cause either of said pinions to engage a corresponding one of said spaced gearsfor operating said rollers at variable speeds, a second horizontal shaft adjustably mounted in said support and having laterally extending ends, a roller rotatively mounted on each of said ends, a surfacing belt for each.Y set of corresponding rollers, means for adjusting the'last said shaft for tightening or loosening said belts, the lower runs of said belts being designed to rest on the surface to be nished.

l0. In a floor surfacing device, a support, a horizontal shaft -xed in said support having laterally extending ends, a roller 'rotaf tively mounted on each of said ends, each of said rollers having its inner end probeveled gearfcommunicating with both of' said beveled gears, a vertical shaft vfor, the

last said beveled gear rotatively mounted in Y said support, spaced gears fixed to said vertical shaft, said gears being of different diameters, a motor1 iixed to said support having. an extended shaft parallel to said vertical shaft, a sleeve provided with pinions of different diameters slidably mounted on said extended shaft, means for shifting said sleeve to cause either of said pinions to engageV a corresponding one of said spaced gea-rs for operating said rollers at variable speeds, a second-horizontal shaft adjustablyl mounted in said support and having laterally extending ends, a roller rotatively mounted on each of said ends, a surfacing belt for each set of corresponding rollers, means for adjusting the last said shaft for tightening or loosening said belts, the lower runs of said belts being-designed to rest on the surface to be finished, a cover plate for said support having a downwardly extending portion at one end and downwardly extending side portions terminating at a point above the: top rims of said belts, a hinged door depend-ing from the lower edge of each of the side members, a pivoted and detachable handle for said support.

1l. A surfacing member for mechanically operated surfacing machines comprising an endless belt having a' seriesof transversely varranged plates, each of said plates being Secured to 'its outer surface by means of rivets through the forward edge of said plate, each of said plates being p-rovided with an angularly and laterally extending flange, a scraper blade for each of said flanges and means for 'detachably securing said blade to said flange.

Des Moines, Iowa, February 25, 1921. v

' JULIUS P. ANDERSON. 

